Ultra Endurance XF

TrailRelease date 2020

Ultra Endurance XF is a trail-running shoe for technical routes and longer outings. Its dual-density XtraFoam midsole and OrthoLite LT Hybrid footbed focus on underfoot cushioning. An EXTS rubber outsole combines a zoned traction pattern with 3mm lugs for braking and push-off on varied terrain, including wet and dry sections.

Intended uses:: Trail

Specs

Weight: -; Not registered
Drop: -; Not registered
Stack (heel/forefoot): -; Not registered
Carbon plate: -; Not confirmed
Midsole: XtraFoam
Outsole: EXTS rubber
Reference price: -; Not registered

Weight measurement and plate details

Weight note: No weight is adopted from the accepted exact retailer sections; blocked snippets, conversions and the calendar's numeric figure are excluded.
Plate note: The accepted retailer sections are not a complete exact official construction basis. Carbon and other plate structures remain unknown.

Prices and release dates by market

1 market is registered. Values are shown as published for each market: no currency conversion and no guessed days or months. Reference prices are not current shop prices.

Reference prices and release dates by market
Market	Reference price	Release
Unknown regionUnknown	Not registered	2020Shown abovemonth and day not confirmed

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Data sources

Specs compiled from published sources. Our data policy

iRunFar new-product release calendar, exact standard Ultra Endurance XF entry

Release

SportsShoes.com

Specs

Last checked: 2026-10-24

Show source notes

Release note: The exact base model appears in the2020 new-product calendar and the retailer's SS20 listing. Use2020 at year precision; market, first-sale day and channel remain unconfirmed. The calendar's January25 entry is not adopted as an exact launch event, and the archived article publication date is not the shoe's release date.
Source note: XtraFoam and EXTS come from SportsShoes' dedicated exact base-model product sections;2020 year context uses the non-review launch-calendar entry as C-strength fallback. The retailer's mismatched Ultra Swift upper paragraph, localized price/RRP, blocked SunnySports figures and calendar numeric specs are excluded. Japan timing, MSRP, manufacturer code, weight, drop, total stack, width and carbon status remain unknown. No launch region is assigned.